To what does the term 2-second rule refer

Ihave a really high metabolism and only weigh 70 pounds (13 almost 14). people always ask me two questions: do you ever eat and how do you eat so much and stay so skinny.i am worried that a high metabolism wont me forever. what are some safe steps i can take to maintain being fit. (also, i already work out i am a dancer so i get cardio a lot)

Ais a person who demonstrates effective communciation, self-directed learning, critical thinking, and responsible citizenship

What is the best way to combat stereotypes in the workplace?